Blade-sharpening device.



CHRISTOPH GLECKLER, EARLHAM, IOWA.

BLADE-SI-IARPENING DEVICE.

Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed July 12, 1916. Serial No. 108,889.

To all whom t may concern.'

Be it known that I, CHRISTOPH GLECKLER, a citizen of the United States,residing at Earlham, in the county of Madison and State of Iowa, haveinvented certain new and useful Improvements in Blade-SharpeningDevices, of which the following is a speciiication, reference being hadto the accompanying drawings.

This invention relates to devices for sharpening blades, particularlyscissor blades, and the invention particularly relates to deviceswhereby the sharpening is done by hand, the blade being held against awhet stone.

The general object of my invention is to provide a device of thischaracter which shall so support the blade that it shall always have aproper relation to the face of the whet stone.

A further object of the invention is to provide a very simple and easilyoperated device, including a base having thereon a whet stone or otherabrasive element, a blade clamp whose angle to the base is always thesame, and, operative means for supporting the blade clamp so that theblade clamp may have motion in practically all directions over the faceof the whet stone except a movement which would change the angle of theblade with relation to the whet stone.

Still another object is to provide a device of this character comprisinga base, an arm formed of a plurality of sections hingedly or pivotallyconnected to the base for movement in a plurality of directions, and ablade clamp connected to one section for pivotal movement toward or awayfrom the base, this blade clamp, however, being supported at apredetermined angle to the base.

Other objects will appear in the course of the following description.

One embodiment of my invention is illustrated in the accompanyingdrawings, wherein- Figure 1 is a perspective view of my sharpeningdevice; Fig. 2 is an elevation with the blade in section and thewhetstone and the base being partly broken away; and Fig. 3 is a sectionacross the arm 20 looking toward the angular member 17; Fig. 4 is atransverse sectional view through the plate 10 and the stone 13, showingthe blade holder 22 in an upwardly turned position so as to sharpen thepoint of the blade A.

Referring to these figures, 10 designates a base which may beconveniently made of sheet metal, this base at one end being upwardlyturned as at 11 and then inwardly bent as at 12. Mounted upon the basein any suitable manner is a whet stoneior like abrasive element 13, thisstone being held in place upon the base by lugs 11 and the upwardlyturned end iiange 15. I do not of course wish to be limited to thisparticular 1gianner of mounting the whet stone upon the ase.

Pivotally mounted upon the seat 12 for movement in a plane approximatelyparallel to the face of the whet stone 13 is an Yarm 16 and pivotallymounted upon the free extremity of this arm is an angular member 17formed with two wings disposed at right angles to each other, the wing18 being pivoted to the extremity of the arm 16. Pivoted to the upwardlyextending wing 19 is an arm 20 and it will be noticed that this arm isslightly deflected and does not lie in the same plane for its entirelength. The free extremity of this arm, therefore, is not disposed at aright angle to the face of the abrasive element 13 but at an acute anglethereto. Pivotally connected to the extremity of this arm 20 formovement in the plane of the arm 2O is a blade clamp designatedgenerally 21, the inner face of this blade clamp having an anglecorresponding to the angle of the free end of the arm 20. The bladeclamp is U-shaped or V -shaped in cross section to provide a portion 22against which the blade rests, and which I will hereafter term a bladeseat, and a portion 23 through which clamp screws 24 pass which engagethe face of the blade. The blade may be delicately shifted vertically inthe blade clamp by means of adjusting screws 25 which extend downwardthrough the upper end. of the clamp, there being preferably a pluralityof these screws.

As illustrated, this sharpening device is particularly adapted forsharpening the blades of shears, scissors, or other implements having abeveled edge and where it is a necessity in sharpening that the blade beheld so that the beveled edge has the same angle throughout rits length.

In thev actual operation of my invention the blade which' is designatedA in Fig. 1 is disposed in the blade clamp and then, holding the blade`clamp in the fingers, it is an easy matter to give the blade a propermovement against the face of the'whetstone. The blade may be given acircular motion or reciprocating movement or it may be brought againstthe whet stone only on a movement in one direction longitudinally of thewhet stone. In all movements, however, and in all positions of theblade, and of the blade clamp, the angle of the blade to the whet stonewill be constantly maintained. Further, inasmuch as the blade clamp ispivoted to the arm Q0, the rounded end of the blade may also besharpened by turning the blade clamp gradually upward on its pivot, asillustrated in Fig. el. -Thus any desired point may be given to theblade and this point properly beveled.

It will be seen that I have provided a sharpening device wherein a bladeis supported upon a base by members having a universal joint, saidmembers being arranged, however, to hold the blade in predeterminedangular relation to the abrasive element.

It will further bev seen that while I have illustrated a. form of mydevice which I find very effective, yet the details of this device maybe varied in many different ways without departing' from the spirit ofthe invention.

T he device may be made from sheet metal, round iron tubing, or it maybe cast or otherwise formed and it is obvious that it may have variousstyles of hinged joints.

Having described my invention, what I claim is:

l. A sharpening device including a base, a whet stone mounted thereon,said base having at the end opposite the whet stone an upwardlyextending portion, an arm pivotally connected to the upwardly extendingportion of the base for movement parallel to the face of the whet stone,an arm pivotally connected to the first named arm for movement parallelto the plane thereof and at right angles to the plane thereof, the freeend of said arm being deiiected into predetermined angular relation tothe base, and a blade clamp pivotally mounted upon the extremity of saidarm.

2. A sharpening device including a base, a. whet stone mounted thereon,said base having at the end opposite the whet stone an upwardlyextending portion, an arm pivotally connected to the upwardly extendingportion of the base for movement parallel to the face of the whet stone,an arm pivctally connected to the first named arm for movement parallelto the plane thereof and at right angles to the plane thereof, the freeend of said arm being deflected into predetermined angular relation tothe base, and a blade clamp pivotally mounted upon the extremity of saidarm, said clamp including an approximately U-shaped member having bladebinding screws and blade adjusting screws.

3. A sharpening device of the character described including a base, anabrasive element mounted upon the base at one end, the opposite end ofthe base being upwardly eX- tended and then laterally bent to form aseat, an arm pivotally mounted upon said seat for movement in a planeapproximately parallel to the face of the abrasive element, an angularlybent member pivoted to the extremity of said arm and having an upwardlyextending wing, an arm pivoted to said last named wing for movement in aplane perpendicular to the face of the abrasive element, said arm at itsfree end being deflected so as to be disposed at an acute angle to theface of the abrasive element, and a blade clamp pivotally connected tothe free end of the arm.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

CHRISTOPH GLECKLER.

IVitnesses C. C. CoUoH, IVALLACE G. JACKSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner o! Patents. Washington, D. C.

